埃塞俄比亚达纳基尔坳陷Gaet 'ale高盐池塘化学分析:地球上最高盐度水体的新记录

IF 1.7 4区地球科学 Q3 GEOCHEMISTRY & GEOPHYSICS

Aquatic Geochemistry Pub Date : 2017-03-23 DOI:10.1007/s10498-017-9312-z

Eduardo Pérez, Yonas Chebude

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引用次数: 13

摘要

埃塞俄比亚达纳基尔洼地Gaet’ale池塘是一个小水体，其水的化学分析结果表明，它是地球上含盐量最高的水体，总溶解固体(TDS)为433 g / kg / 1。水的组成表明两种主要盐CaCl2和MgCl2占主导地位，Ca:Mg = 3.1 (w/w)。K+， Na+和NO3的踪迹?还检测到铁(III)配合物，使水呈现出特有的黄色。密度测量、元素分析、热重分析(TGA)和粉末x射线衍射数据与测定的成分和盐度一致。这个池塘的水与南极洲的唐璜池塘的成分相似，但盐度更高，这可以用主要成分的温度和溶解度来解释。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Chemical Analysis of Gaet’ale, a Hypersaline Pond in Danakil Depression (Ethiopia): New Record for the Most Saline Water Body on Earth

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Chemical Analysis of Gaet’ale, a Hypersaline Pond in Danakil Depression (Ethiopia): New Record for the Most Saline Water Body on Earth

The chemical analysis of the water of Gaet’ale Pond, a small water body located in Danakil Depression, Ethiopia, resulted to be the most saline water body on earth with total dissolved solids (TDS) of 433?g?kg^?1. The composition of the water indicates the predominance of two main salts: CaCl₂ and MgCl₂ at a proportion of Ca:Mg?=?3.1 (w/w). Traces of K⁺, Na⁺ and NO₃ ^? are also detected, as well as Fe(III) complexes that give the water a characteristic yellow color. Density measurements, elemental analysis, thermogravimetrical analysis (TGA) and powder X-ray diffraction data are consistent with the composition and salinity determined. The water of this pond has a similar composition to Don Juan Pond, Antarctica, but a higher salinity, which can be explained in terms of temperature and solubility of the main components.

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来源期刊

Aquatic Geochemistry 地学-地球化学与地球物理

CiteScore

4.30

自引率

0.00%

发文量

审稿时长

1 months

期刊介绍： We publish original studies relating to the geochemistry of natural waters and their interactions with rocks and minerals under near Earth-surface conditions. Coverage includes theoretical, experimental, and modeling papers dealing with this subject area, as well as papers presenting observations of natural systems that stress major processes. The journal also presents `letter''-type papers for rapid publication and a limited number of review-type papers on topics of particularly broad interest or current major controversy.